Modularized longitudinal magnetic field permanent magnet motor

Abstract

The invention discloses a modularized longitudinal magnetic field permanent magnet motor, relating to the motor field, solving the problem of complex structure of an iron core unit, reducing winding copper loss and achieving the effect of eliminating interphase magnetic coupling of the original structure. Each fixing hole of a phase unit fixing shell is fixed with a phase unit, the iron core in each phase unit consists of two teeth and a magnetic yoke segment which is arranged between the two teeth and is connected into an n shape along the movement direction, the phase unit winding is wound on the iron core unit; the secondary comprises permanent magnets and a magnetic yoke; the permanent magnets are fixed on the magnetic yoke, magnetizing directions of each two adjacent permanent magnetare opposite, or the permanent magnets are in a Halbach magnet structure; the pitch of two teeth of the iron core unit and the polar distance of the permanent magnets meet the relationship of tau t>tau p, the pitch tau l of two adjacent teeth in different phase units and the polar distance of the permanent magnets meet the relationship of tau l<tau p, and tau t, tau l and tau p meet the relationship of mk1 (tau t + tau l) = (mk2+ / -1) tau p. The permanent magnet motor of the invention adopts special phase units and can be widely used for other types of motors.

Description

technical field [0001] The invention relates to the field of electrical machines. Background technique [0002] The structure of the traditional flat linear permanent magnet synchronous motor is as follows: Figure 9 shown. The motor has an integer slot structure, that is, the number of slots per pole and phase of the motor is an integer. The main problems of the linear permanent magnet synchronous motor with integer slot structure are: on the one hand, the positioning force of the motor caused by the cogging effect is relatively large; on the other hand, the performance-to-volume ratio of the motor is low, which is mainly due to the p When the design is large, the yoke part of the permanent magnet will be thickened, which will increase the volume and weight of the motor, and when the pole pitch of the motor τ p If the design is small, the armature core pitch τ t is small, which reduces the strength of the armature teeth, i.e. the pitch τ of the motor t and polar distanc...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of complex core unit structure, reduce the shortcoming of winding copper loss, and achieve the effect of eliminating magnetic coupling between phases in the original structure, the present invention proposes a modular longitudinal magnetic field permanent magnet motor

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